As a follow up to Bug 1772901, once the InstallTrigger implementation has been disabled in all channels for enough baking time and we are sure we will not have to flip the "extensions.InstallTriggerImpl.enabled" pref back to true as a last resort, we'll want to completely remove it from mozilla-cental, in particular:

• remove amInstallTrigger.jsm
• remove InstallTrigger related code from dom/base/nsGlobalWindowInner.cpp (but keep the part of nsGlobalWindowInner::GetInstallTrigger that would still be needed to keep the global InstallTrigger enumerable and set to null if we have not yep disabled it on all channels)
• remove the "extensions.InstallTriggerImpl.enabled" pref and code that is referencing it
• remove tests covering the behaviors expected by the InstallTrigger implementation itself

These tests are removed:

• browser/base/content/test/webextensions/browser_permissions_installTrigger.js
• dom/base/crashtests/642022-1.html
• js/xpconnect/crashtests/290162-1.html
• js/xpconnect/crashtests/616930-1.html
• js/xpconnect/crashtests/648206-1.html
• js/xpconnect/tests/mochitest/test_bug628410.html
• toolkit/mozapps/extensions/test/browser/browser_installtrigger_install.js
• toolkit/mozapps/extensions/test/xpcshell/test_installtrigger_schemes.js
• toolkit/mozapps/extensions/test/xpinstall/browser_amosigned_trigger.js
• toolkit/mozapps/extensions/test/xpinstall/browser_amosigned_trigger_iframe.js
• toolkit/mozapps/extensions/test/xpinstall/browser_auth.js
• toolkit/mozapps/extensions/test/xpinstall/browser_auth2.js
• toolkit/mozapps/extensions/test/xpinstall/browser_auth3.js
• toolkit/mozapps/extensions/test/xpinstall/browser_badargs.js
• toolkit/mozapps/extensions/test/xpinstall/browser_badargs2.js
• toolkit/mozapps/extensions/test/xpinstall/browser_badhash.js
• toolkit/mozapps/extensions/test/xpinstall/browser_badhashtype.js
• toolkit/mozapps/extensions/test/xpinstall/browser_bug540558.js
• toolkit/mozapps/extensions/test/xpinstall/browser_bug611242.js
• toolkit/mozapps/extensions/test/xpinstall/browser_bug638292.js
• toolkit/mozapps/extensions/test/xpinstall/browser_bug645699.js
• toolkit/mozapps/extensions/test/xpinstall/browser_bug645699_postDownload.js
• toolkit/mozapps/extensions/test/xpinstall/browser_bug672485.js
• toolkit/mozapps/extensions/test/xpinstall/browser_containers.js
• toolkit/mozapps/extensions/test/xpinstall/browser_cookies.js
• toolkit/mozapps/extensions/test/xpinstall/browser_cookies2.js
• toolkit/mozapps/extensions/test/xpinstall/browser_cookies3.js
• toolkit/mozapps/extensions/test/xpinstall/browser_cookies4.js
• toolkit/mozapps/extensions/test/xpinstall/browser_enabled.js
• toolkit/mozapps/extensions/test/xpinstall/browser_hash.js
• toolkit/mozapps/extensions/test/xpinstall/browser_hash2.js
• toolkit/mozapps/extensions/test/xpinstall/browser_httphash.js

These test the X-Target-Digest header, which was introduced in bug 591070. I did some debugging and it seems this header is completely ignored in extension installation from navigation. I guess because the content handler doesn't see redirects?

• toolkit/mozapps/extensions/test/xpinstall/browser_httphash2.js
• toolkit/mozapps/extensions/test/xpinstall/browser_httphash3.js
• toolkit/mozapps/extensions/test/xpinstall/browser_httphash4.js
• toolkit/mozapps/extensions/test/xpinstall/browser_httphash5.js
• toolkit/mozapps/extensions/test/xpinstall/browser_httphash6.js

• toolkit/mozapps/extensions/test/xpinstall/browser_installchrome.js
• toolkit/mozapps/extensions/test/xpinstall/browser_localfile2.js
• toolkit/mozapps/extensions/test/xpinstall/browser_localfile4.js
• toolkit/mozapps/extensions/test/xpinstall/browser_localfile4_postDownload.js
• toolkit/mozapps/extensions/test/xpinstall/browser_privatebrowsing.js
• toolkit/mozapps/extensions/test/xpinstall/browser_relative.js
• toolkit/mozapps/extensions/test/xpinstall/browser_softwareupdate.js
• toolkit/mozapps/extensions/test/xpinstall/browser_trigger_redirect.js
• toolkit/mozapps/extensions/test/xpinstall/browser_unsigned_trigger.js

Navigation installation in iframes is covered by toolkit/mozapps/extensions/test/browser/browser_subframe_install.js

• toolkit/mozapps/extensions/test/xpinstall/browser_unsigned_trigger_iframe.js
• toolkit/mozapps/extensions/test/xpinstall/browser_unsigned_trigger_xorigin.js

• toolkit/mozapps/extensions/test/xpinstall/bug540558.html

• toolkit/mozapps/extensions/test/xpinstall/bug638292.html

• toolkit/mozapps/extensions/test/xpinstall/bug645699.html

• toolkit/mozapps/extensions/test/xpinstall/startsoftwareupdate.html

• toolkit/mozapps/extensions/test/xpinstall/triggerredirect.html

  These tests are modified to test navigation-based installation

• browser/base/content/test/webextensions/browser_permissions_unsigned.js

• browser/components/enterprisepolicies/tests/browser/browser_policy_extensionsettings.js

• browser/components/enterprisepolicies/tests/browser/extensionsettings.html

• toolkit/mozapps/extensions/test/xpinstall/browser_auth4.js

• toolkit/mozapps/extensions/test/xpinstall/browser_corrupt.js

• toolkit/mozapps/extensions/test/xpinstall/browser_doorhanger_installs.js

• toolkit/mozapps/extensions/test/xpinstall/browser_empty.js

• toolkit/mozapps/extensions/test/xpinstall/browser_newwindow.js

• toolkit/mozapps/extensions/test/xpinstall/browser_offline.js

These prefs are removed:

• extensions.InstallTriggerImpl.enabled

https://hg.mozilla.org/mozilla-central/rev/15ce8d585a91